Product highlights
Open with your phone
100 dB sound
Attack resistant
Doesn't scratch
Packed with features
Rain-proof design
Doesn't slow you down
TMD Chain Lock
Pre-order today to reserve your TMD Chain Lock and receive a 20% discount. This offer is valid until September 2025. The ART-2 model is expected to ship in September 2025, and the ART-3 model will be shipped in October 2025.
Product highlights
Open with your phone
100 dB sound
Attack resistant
Doesn't scratch
Packed with features
Rain-proof design
Doesn't slow you down
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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Customer Support
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FAQ’s
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Contact Us
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FAQ's
Please read our FAQ's page to find out more.
Can I still unlock my lock if my phone's battery is dead?
Yes, if your phone battery is dead, you can always manually unlock the lock using your unique code, which you can set up in the app. This code can be entered using the button on the lock.
How long does the battery last?
Battery life depends on usage. With normal use, a fully charged battery lasts about 9 months. Charging the battery from 0 to 100% takes about 2 hours.
How loud is the alarm?
The alarm emits a sound of approximately 100 decibels. Enough to scare any thief away.
What features does the app offer?
The app lets you unlock your lock, track its last known location, share access with friends or family, and more.
How secure is the TMD Chain Lock?
The TMD Chain Lock is ART-certified and approved by insurance companies.
While the lock body is designed to withstand the harshest conditions and attacks. Every component has been engineered to stop attackers.
The TMD Chain Lock is nearly unbeatable, withstanding high-velocity impacts, bolt cutters, and even sophisticated electronic attacks.
What does ART 2 and ART 3 mean?
ART is a certification that indicates how resistant a lock is to theft.
ART 2: Suitable for bicycles and e-bikes. It meets the basic security requirements of many insurers.
ART 3: Offers a higher level of protection. It is often required by insurers to cover scooters, mopeds, and sometimes high-end e-bikes or light motorcycles.